CN104832178A - A layering and partially filling coal mining method of thick seams - Google Patents

A layering and partially filling coal mining method of thick seams Download PDF

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Publication number
CN104832178A
CN104832178A CN201510127025.2A CN201510127025A CN104832178A CN 104832178 A CN104832178 A CN 104832178A CN 201510127025 A CN201510127025 A CN 201510127025A CN 104832178 A CN104832178 A CN 104832178A
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China
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filling
paste
mining
coal
production
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CN201510127025.2A
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Chinese (zh)
Inventor
常庆粮
周华强
吴锋锋
王宁
唐维军
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中国矿业大学
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Priority to CN201510127025.2A priority Critical patent/CN104832178A/en
Publication of CN104832178A publication Critical patent/CN104832178A/en

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    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21CMINING OR QUARRYING
    • E21C41/00Methods of underground or surface mining; Layouts therefor
    • E21C41/16Methods of underground mining; Layouts therefor
    • E21C41/18Methods of underground mining; Layouts therefor for brown or hard coal
    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21FSAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
    • E21F15/00Methods or devices for placing filling-up materials in underground workings
    • E21F15/005Methods or devices for placing filling-up materials in underground workings characterised by the kind or composition of the backfilling material

Abstract

The invention relates to a coal mining method suitable for thick seams under buildings, railroads and water bodies, and particularly relates to a layering and partially filling coal mining method of thick seams. The method includes reasonably dividing a thick seam into an upper layer and a lower layer; subjecting the upper layer to full-filling mining firstly; and after mining of the upper layer is finished and the upper layer is stabilized, subjecting the lower layer to strip gap filling mining by adopting the upper layer as a false roof. The method can reduce loss of resources of remaining coal pillars during thick seam mining, effectively controls ground depression, has important significance for efficient mining of thick seams under "buildings, railroads and water bodies" or thick seams needing ground protection, and achieves green, efficient and safe mining of coal mines.

Description

A kind of high seam layered portion filling coal mining method
Technical field
The invention belongs to coal mining field, a kind of high seam layered portion filling coal mining method that the high seam collection being particularly useful under buildings uses.
Background technology
The pressure coal amount of current China's coal-mine " three times " (under building, under water body, under railway) is more than 10,000,000,000 tons, along with the development of urban construction, industry agricultural, " three times " pressure coal, particularly building presses down coal and can increase gradually, not only restrict the lifting of mine production capacity, and easily cause the low rate of extraction and the wasting of resources, against target and the theory of sustainable development and lasting exploit.Filling mining technology effectively can improve the utilization rate of coal resources, effectively reduces the secondary pollution because coal mining causes and disaster simultaneously.The filling mining technology that current colliery is commonly used has overlying strata separation layer grouting filling technology, spoil mechanized filling technology, paste body filling technology, high*.water packing technology etc.Above-mentioned filling mining technology is because of the difference of construction technology, cost of investment etc., different control effects is had in reduction surface subsidence amount, although paste body filling technology filler cost is higher, initial investment is larger, complex process, but pack densification is high, effectiveness of reducing subsidence is good, obtains the generally approval in mining area.
Along with the minimizing gradually of China's Jurassic Period coal seam reserves, thick, special thick and shared by thick sandstone the exploitation ratio of the Carboniferous System of its underpart is increasing.At present for high seam, there is high working face once to adopt complete thick combining and adopt coal-mining method, the descending caving method exploitation of incline cut and fill stoping lapping and mining exploitation method, above-mentioned several coal-mining method has respective advantage and scope on probation, but for thick coal-layer mining, there are following shortcoming and unworthiness: high working face is once adopted complete thick combining and adopted the coal seam that coal-mining method is applicable to be less than 5 m; Incline cut and fill stoping is descending, and to be caving the coal-mining method rate of extraction lower, and easily cause the hidden danger such as spontaneous fire; In the management of top board, gas and spontaneous fire, larger difficulty is had during mining exploitation method.
Practice shows, when obturation is played tricks and is pushed up, during bottom slice filling mining, top board obturation is that overall time is built and formed, and it is inner without joint fissure, therefore its integrality is better than roof condition during mining top slice, after coal cutting drilling depth completes, top board, without the need to adopting specially treated (needing during mining top slice to adopt linked network and anchor pole to do temporary lining), reduces labor strength, improves the fltting speed in filling operation face.
The plane of weakness perpendicular to advance of the face direction is there is between the obturation that during higher slice exploitation, two working cycles are built, achieve bottom slice filling band to intersect vertically with false top plane of weakness, when therefore lower leaf filling band trend is consistent with direction of propulsion, the impact of plane of weakness on vacation top intensity can be reduced.
Summary of the invention
Technical problem: the object of the invention is the deficiency overcoming prior art, there is provided a kind of method effectively can solve the problem that thick coal-layer mining stays the resources loss of coal column, control the high seam layered portion filling coal mining method of earth's surface distortion in the scope that safety code allows.
Technical scheme: this is for realizing above-mentioned technical purpose, and the high seam layered portion filling coal mining method of invention, comprises the steps:
A. detect scope and the protection class of surface buildings group, divide the limit of mining of the high seam below buildings;
B. according to coal seam thickness, coal seam is divided into upper and lower two layerings;
C. the mining width in higher slice coal seam is determined, set up work plane in higher slice coal seam and carry out backfill exploitation, alternately paste body filling band and back production band is divided in work plane, the paste body filling band divided is exploited successively, in time to paste body filling strip filling lotion when work plane often pushes ahead 2 ~ 4m, after the paste body filling strip filling divided when higher slice coal seam completes, driving back production can be carried out to back production band, carry out paste body filling equally during back production, mine and filling parallel operations
D. higher slice seam mining is complete and after fill paste solidification-stable, after field sampling, intensity after higher slice coal seam backfill lotion solidifies is detected, when detection record a demerit meet keep fill paste stability number judge backfill lotion solidify after intensity qualified, back down using higher slice coal seam backfill lotion as the vacation of work plane and adopt lower leaf coal seam, determine lower leaf coal seam paste body filling strip width and back production strip width, filling strip width is 25 ~ 50m, back production width is 3 ~ 12 m, alternately paste body filling band and back production band is divided in work plane, the paste body filling band divided is exploited successively, work plane carries out filling to paste body filling band when often pushing ahead 2 ~ 4m in time, when paste body filling Striping noise and filling is complete, wait for that the obturation in paste body filling bar is solidified, obturation sampling after solidifying is detected, judge that backfill lotion reaches design strength when meeting fill paste stability number situation, after reaching the intensity supporting higher slice vacation top and rock stratum, driving back production can be carried out successively to the back production band between two filling bands, to assign a work in back production band face, the goaf formed after exploitation does not deal with, along with the advance of the face, after goaf scope expands gradually, goaf filling body vacation top sinks because lower leaf strip filling body provides support, the air intake lane of back production band and transportation roadway are tunneled along obturation, do not stay coal column, until complete the exploitation of all back production bands.
Charges used are the lotion mixture of the gangue of broken processing, flyash or slag, cementitious material and water; The mass ratio of gangue used, flyash or slag and filling cementitious material and water is 150:2:30.
Beneficial effect: owing to have employed technique scheme, after 1. higher slice exploits also filling, operation under the vacation top that lower leaf can be formed in the obturation of higher slice, achieves and does not retain coal pillar mining, to greatest extent reclaiming coal resource; 2. with lotion mixture obturation displacement coal resources, effectively can control the earth's surface distortion that surface buildings and appurtenance are allowing, control surface subsidence amount in allowed band; 3. the vacation top that the complete filling in higher slice coal seam is formed has continuity, adds the safety of lower leaf exploitation; Lower leaf adopts interval filling coal mining, back production again after first filling, adds the safety of lower leaf exploitation; 4. compared with mining with whole fill, lower leaf of the present invention, by regulating the width of paste body filling band, makes paste body filling band enough support earth's surface building, thus without the need to carrying out whole fill to goaf, be conducive to like this reducing filling cost, improve coal mining enterprise's benefit; 5. spoil, flyash etc. are as the important composition composition of filler, eliminate the hillock on ground, reduce flyash to the pollution of environment.Its method is simple, and technique effect is good, coal recovery rate is high, safety and environmental protection, has practicality widely.
Accompanying drawing explanation
Fig. 1 is higher slice seam mining backfilling working face of the present invention schematic diagram;
Fig. 2 is higher slice seam mining backfilling working face of the present invention sectional drawing.
Fig. 3 is lower leaf seam mining backfilling working face of the present invention schematic diagram;
Fig. 4 is lower leaf seam mining backfilling working face of the present invention sectional drawing.
In figure: 1-stowing interval; 2-paste body filling band; 3-top board; 4-work plane; 5-coal seam;
6-stope drift active workings; 7-base plate; 8,10,12,14-filling area; 9,11,13,15-non-filling area; 16-higher slice coal seam backfill lotion.
Detailed description of the invention
Below in conjunction with accompanying drawing, one embodiment of the present of invention are further described:
High seam layered portion filling coal mining method of the present invention, its coal mining step is as follows:
A. the geological conditions in coal seam is extracted, according to scope and the protection class of earth's surface buildings, basis is defined as with traditional exploiting field scope, make surface buildings group in the protection domain of packwall, require as standard with the protection class of " building, water body, railway and main roadway coal column stay and set and mining pressed coal code ", determine ore deposit underground coal filling mining scope; B. according to coal seam thickness, coal seam 5 is divided into upper and lower two layerings, be top board 3 above coal seam 5, below is base plate 7;
C. the mining width in higher slice coal seam is determined, set up work plane 4 in higher slice coal seam and carry out backfill exploitation, as depicted in figs. 1 and 2, alternately paste body filling band 2 and back production band 6 is divided in work plane 4, paste body filling band 2 spacing is stowing interval 1, the paste body filling band 2 divided is exploited successively, in time to paste body filling strip filling lotion when work plane often pushes ahead 2 ~ 4m, each filling step pitch 1, after paste body filling band 2 filling divided when higher slice coal seam completes, driving back production can be carried out to back production band 6, equally paste body filling is carried out to back production band 6 during back production, mine and filling parallel operations,
D. higher slice seam mining is complete and after fill paste solidification-stable, field sampling to higher slice coal seam backfill lotion solidify after intensity detect, after testing result satisfied maintenance fill paste stability number judgement backfill lotion solidifies, intensity is qualified, back down using higher slice coal seam backfill lotion 16 as the vacation of work plane as shown in Figure 3 and Figure 4 and adopt lower leaf coal seam, determine lower leaf coal seam paste body filling band 2 width and back production band 6 width, filling band 2 width is 25 ~ 50m, back production width 6 is 3 ~ 12 m, alternately paste body filling band 2 is divided in work plane, the paste body filling band 2 divided and stope drift active workings 6 are exploited successively, work plane carries out filling to paste body filling band when often pushing ahead 2 ~ 4m in time, when paste body filling Striping noise and filling is complete, wait for that the obturation in paste body filling bar is solidified, form filling area 8, 10, 12, 14, obturation sampling after solidifying is detected, judge that backfill lotion reaches design strength when meeting fill paste stability number situation, after reaching the intensity supporting higher slice vacation top and rock stratum, driving back production can be carried out successively to the back production band 6 between two paste body filling bands 2, in back production band, arrange that work 2 does face, the goaf formed after exploitation does not deal with, form non-filling area 9, 11, 13, 15, along with the advance of the face, after goaf scope expands gradually, goaf filling body vacation top sinks because the supporting role of lower leaf strip filling body is controlled, the air intake lane of back production band 2 and transportation roadway are tunneled along obturation, do not stay coal column, until complete the exploitation of all back production bands 2.
Charges used are the lotion mixture of the gangue of broken processing, flyash or slag, cementitious material and water; The mass ratio of gangue used, flyash or slag and filling cementitious material and water is 150:2:30.

Claims (3)

1. a coal-mining method for thick seam slicing system paste body filling, is characterized in that comprising the steps:
A. detect scope and the protection class of surface buildings group, divide the limit of mining of the high seam below buildings;
B. according to coal seam thickness, coal seam is divided into upper and lower two layerings;
C. the mining width in higher slice coal seam is determined, set up work plane in higher slice coal seam and carry out backfill exploitation, alternately paste body filling band and back production band is divided in work plane, the paste body filling band divided is exploited successively, in time to paste body filling strip filling lotion when work plane often pushes ahead 2 ~ 4m, after the paste body filling strip filling divided when higher slice coal seam completes, driving back production can be carried out to back production band, carry out paste body filling equally during back production, mine and filling parallel operations
D. higher slice seam mining is complete and after fill paste solidification-stable, after field sampling, intensity after higher slice coal seam backfill lotion solidifies is detected, when detection record a demerit meet keep fill paste stability number judge backfill lotion solidify after intensity qualified, back down using higher slice coal seam backfill lotion as the vacation of work plane and adopt lower leaf coal seam, determine lower leaf coal seam paste body filling strip width and back production strip width, filling strip width is 25 ~ 50m, back production width is 3 ~ 12 m, alternately paste body filling band and back production band is divided in work plane, the paste body filling band divided is exploited successively, work plane carries out filling to paste body filling band when often pushing ahead 2 ~ 4m in time, when paste body filling Striping noise and filling is complete, wait for that the obturation in paste body filling bar is solidified, obturation sampling after solidifying is detected, judge that backfill lotion reaches design strength when meeting fill paste stability number situation, after reaching the intensity supporting higher slice vacation top and rock stratum, driving back production can be carried out successively to the back production band between two filling bands, to assign a work in back production band face, the goaf formed after exploitation does not deal with, along with the advance of the face, after goaf scope expands gradually, goaf filling body vacation top sinks because lower leaf strip filling body provides support, the air intake lane of back production band and transportation roadway are tunneled along obturation, do not stay coal column, until complete the exploitation of all back production bands.
2. by the high seam layered portion filling coal mining method described in right 1, it is characterized in that: charges used are the lotion mixture of the gangue of broken processing, flyash or slag, cementitious material and water.
3. by the high seam layered portion filling coal mining method described in right 2, it is characterized in that: the mass ratio of gangue used, flyash or slag and filling cementitious material and water is 150:2:30.
CN201510127025.2A 2015-03-23 2015-03-23 A layering and partially filling coal mining method of thick seams CN104832178A (en)

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Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105350966A (en) * 2015-10-29 2016-02-24 中国矿业大学(北京) Method adopting remaining coal pillar mining of lower protective seam to realize continuous pressure relief of lower protected seam
CN106014410A (en) * 2016-06-21 2016-10-12 中南大学 Filling mining method for downward access part
CN106351692A (en) * 2016-09-22 2017-01-25 中南大学 Waste rock cementing pillar filling mining method for gently-inclined thin ore bodies
CN106522951A (en) * 2016-11-22 2017-03-22 中国神华能源股份有限公司 Mining technology for lower slice fully-mechanized coal mining face passing through concentrated coal pillar of higher slice coal seam
CN107339105A (en) * 2017-08-11 2017-11-10 太原理工大学 A kind of method for being layered the residual exploiting field of paste body filling second mining super high seam and stopping adopting line coal column
CN107559008A (en) * 2017-08-11 2018-01-09 太原理工大学 A kind of method combined second mining super high seam and stop adopting line coal column
CN107829736A (en) * 2017-08-03 2018-03-23 西安科技大学 A kind of colliery Striping noise and filling displacement coal column method
CN107939401A (en) * 2017-11-28 2018-04-20 中国矿业大学 A kind of super high seam layering interval filling coal mining method
CN107975372A (en) * 2017-11-22 2018-05-01 中国矿业大学 A kind of super high seam descending slicing filling mining method
CN108278113A (en) * 2018-02-06 2018-07-13 太原理工大学 A kind of super high seam layering non-integral filling mining method
CN108461030A (en) * 2018-05-17 2018-08-28 中国矿业大学(北京) A kind of teaching simulating device of thick seam slicing system
CN108708723A (en) * 2018-05-02 2018-10-26 中国矿业大学 Alternately support subtracts heavy method without coal column filling mining for a kind of coal petrography column
CN108825237A (en) * 2018-06-01 2018-11-16 中国煤炭科工集团太原研究院有限公司 A kind of special thick coal continuous milling machine divides excavating technology with the layering combined is filled
CN109113744A (en) * 2018-09-04 2019-01-01 中国矿业大学 A kind of external supporting substituted room formula pillar recovery method
CN109577979A (en) * 2018-12-10 2019-04-05 金川集团股份有限公司 To sublevel fill-mining method under a kind of high-ground stress large size ore body
CN109915145A (en) * 2019-04-16 2019-06-21 中国矿业大学 Recovery method is filled by a kind of office of adopting, mine coal resources office
CN110318803A (en) * 2019-07-12 2019-10-11 中国矿业大学 A kind of formula interval placement method using granular media filler
CN110344342A (en) * 2019-07-16 2019-10-18 安徽岩芯光电技术有限公司 Bead construction method, sedimentation degree detection method and device and sedimentation degree analyzer
US10876403B2 (en) * 2018-08-02 2020-12-29 Xiexing Miao Method for mining ultra-thick coal seam by utilizing goaf solid backfilling technique

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Cited By (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105350966A (en) * 2015-10-29 2016-02-24 中国矿业大学(北京) Method adopting remaining coal pillar mining of lower protective seam to realize continuous pressure relief of lower protected seam
CN106014410A (en) * 2016-06-21 2016-10-12 中南大学 Filling mining method for downward access part
CN106351692A (en) * 2016-09-22 2017-01-25 中南大学 Waste rock cementing pillar filling mining method for gently-inclined thin ore bodies
CN106351692B (en) * 2016-09-22 2018-06-22 中南大学 A kind of slight slope and thin ore body barren rock cementing pillar method of mining by the way of filling
CN106522951A (en) * 2016-11-22 2017-03-22 中国神华能源股份有限公司 Mining technology for lower slice fully-mechanized coal mining face passing through concentrated coal pillar of higher slice coal seam
CN107829736A (en) * 2017-08-03 2018-03-23 西安科技大学 A kind of colliery Striping noise and filling displacement coal column method
CN107339105A (en) * 2017-08-11 2017-11-10 太原理工大学 A kind of method for being layered the residual exploiting field of paste body filling second mining super high seam and stopping adopting line coal column
CN107559008A (en) * 2017-08-11 2018-01-09 太原理工大学 A kind of method combined second mining super high seam and stop adopting line coal column
CN107339105B (en) * 2017-08-11 2019-10-11 太原理工大学 A method of stop adopting line coal column in the layering residual exploiting field of paste body filling second mining super high seam
CN107975372A (en) * 2017-11-22 2018-05-01 中国矿业大学 A kind of super high seam descending slicing filling mining method
WO2019100906A1 (en) * 2017-11-22 2019-05-31 中国矿业大学 Downward filling mining method for extra-thick coal seam
CN107939401A (en) * 2017-11-28 2018-04-20 中国矿业大学 A kind of super high seam layering interval filling coal mining method
CN107939401B (en) * 2017-11-28 2019-05-14 中国矿业大学 A kind of super high seam layering interval filling coal mining method
CN108278113A (en) * 2018-02-06 2018-07-13 太原理工大学 A kind of super high seam layering non-integral filling mining method
CN108708723A (en) * 2018-05-02 2018-10-26 中国矿业大学 Alternately support subtracts heavy method without coal column filling mining for a kind of coal petrography column
CN108461030A (en) * 2018-05-17 2018-08-28 中国矿业大学(北京) A kind of teaching simulating device of thick seam slicing system
CN108461030B (en) * 2018-05-17 2020-04-17 中国矿业大学(北京) Teaching simulation device for layered mining of thick coal seam
CN108825237B (en) * 2018-06-01 2019-10-11 中国煤炭科工集团太原研究院有限公司 A kind of special thick coal continuous milling machine divides excavating technology with the layering combined is filled
CN108825237A (en) * 2018-06-01 2018-11-16 中国煤炭科工集团太原研究院有限公司 A kind of special thick coal continuous milling machine divides excavating technology with the layering combined is filled
US10876403B2 (en) * 2018-08-02 2020-12-29 Xiexing Miao Method for mining ultra-thick coal seam by utilizing goaf solid backfilling technique
CN109113744B (en) * 2018-09-04 2019-11-05 中国矿业大学 A kind of external supporting substituted room formula pillar recovery method
CN109113744A (en) * 2018-09-04 2019-01-01 中国矿业大学 A kind of external supporting substituted room formula pillar recovery method
CN109577979B (en) * 2018-12-10 2020-11-10 金川集团股份有限公司 High-ground-stress large ore body downward segmented filling mining method
CN109577979A (en) * 2018-12-10 2019-04-05 金川集团股份有限公司 To sublevel fill-mining method under a kind of high-ground stress large size ore body
CN109915145A (en) * 2019-04-16 2019-06-21 中国矿业大学 Recovery method is filled by a kind of office of adopting, mine coal resources office
CN110318803A (en) * 2019-07-12 2019-10-11 中国矿业大学 A kind of formula interval placement method using granular media filler
CN110344342A (en) * 2019-07-16 2019-10-18 安徽岩芯光电技术有限公司 Bead construction method, sedimentation degree detection method and device and sedimentation degree analyzer

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Application publication date: 20150812